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Disassemble wheel end components
CAUTION!
Do Not Work under the Trailer When the Vehicle is supported only by Jacks. Jacks Can Slip or Tip Over and
Cause Injury.
1. Jack up the vehicle under the axle being serviced.
2. Install jack stands under each corner of the vehicle to hold it in position.
3. Remove wheels or tires and rims from the axle using standard procedures.
4. If the axle has auxiliary spring brakes, carefully compress and lock the spring so that the spring cannot
actuate during disassembly.
CAUTION!
Carefully Follow the Service Instructions Supplied by the Spring Brake Manufacturer when you Work on This
Component. The Spring Brake Activate and Cause Injury.
5. Release the slack adjusters or Stop master automatic adjustment so that the brakes retract and the drums
or rotors will clear the linings.
6. On oil lubricated hubs, put an empty container under the hubcap to receive the leaking oil when the
hubcap is removed in step 7.
7. Remove the cap screws holding the hubcap to the hub, the hub cap and gaskets from each spindle.
8. On double nut design wheel ends, remove the setscrew, outer jam nut; lock ring and bearing adjusting
nut from each spindle. (See Below).
On single nut design wheel ends, remove the cotter pin or lock ring, and the adjusting nut from each
spindle.
9. Remove the hubs and drums, or hubs and rotors if the axle has disc brakes, from the spindle using
standard procedures.
IMPORTANT: The outer wheel bearing can remain inside the hub when the hub is removed from
the spindle. You must be careful that the bearing cones do not fall from the hub and become
damaged.
10. If the wheel bearing cups must be removed, use a bearing puller to remove the bearing cups and the
wheel bearing seal from the hub.
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